Synonyms of hourly

2 Syllables
weekly, annual, monthly, daily, yearly, rhythmic, cyclic, serial
3 Syllables
routine, perennial, regular, sporadic, orbital, infrequent, cyclical, recurring, fluctuating, spasmodic, periodic, recurrent, centennial, epochal, seasonal, repeated
4 Syllables
occasional, alternate, intermittent, isochronous, periodical, isochronal
6 Syllables
on-again-off-again